Question

Which of the following set of quantum numbers is correct for an electron in 5f orbital?

• A.
  $n=5,l=3,m=3,s=+\frac{1}{2}$
• B.
  $n=5,l=4,m=3,s=+\frac{1}{2}$
• C.
  $n=5,l=3,m=4,s=+\frac{1}{2}$
• D. $n=5,l=3,m=5,s=+\frac{1}{2}$

Answer 1

The correct option is A

$n=5,l=3,m=3,s=+\frac{1}{2}$
For an electron in 5f orbital, n = 5 and l = 3 and m can have from -3 to +3 and s can be +$\frac{1}{2}$ or -$\frac{1}{2}$
$\therefore$The only possible set of quantum number for an electron in 5 f orbital from the given options is
$n=5,l=3,m=3,s=+\frac{1}{2}$